Rock-drilling device



March 1.5, 1927.

E. G'. GAR-rm ROCK DRLLING DEVICE Filed April 10, 1922 Patented Mari. l5, 192;?.v i f UNITED- STATES :ELMER e;

PMEN'rfo-rrlc f GAnTIN, F CLAREMONIJQNEW HAMPsHnE, Assreivor, 'ro sULiiIvAn MA- ,.cHINERY COMPANY, A ooRPonn'rIoN or Massacnusn'rrs.af v

RocKfDRILLING DEVICE. Y

Application filed aprii vr1o, 17922. serial No, 551,326.

My'invention relates to rockY drilling devices, and more particularly to cleansing shown for purposesof illustration one form in which theillustrativ'e fluid supply means for suchmdevices. c

An object of iny invention 'is to providev an improved'rock drilling ..d v1ce. Another object ofgmyy invention is to provide an 1m-` proved rocky drilling device having improved l cleansing fluid supply means. A' further Aolonism per se and for* the cleansing fluid supply means associated therewith.y Other objects andradva'ntages of my invention will hereinafter more fully appear.

' In t the accompanying drawings I have which my invention'may assume in practice. In thesedrawing'sre j f .Y Figg'l is a lcentral vertical longitudinal section' vthrough aV rock `drilling mechanism form of myv invention is incorporated. n i

` Fig. 2 is a transverse section on the broken line2f-2 of Fig. A1. t In the accompanying drawings I have shown Imy invention employed `in conjunc- Vtion withga rock drilling mechanism which includes a motor generally designated 1 andv having a cylinder 2 in which apiston 3 is reciprocable under theaction of'motive fluid" supplied thereto in a well known manner under the control Vof the piston itself.Av The piston 'isjprovided with a striking barv4 which projects through 'a front head V'and suitable ratchet mechanism '6 in to a-chuck' ymechanism 7 wherein itfengages ithefrear ,y u A v plymotivfe fluid to the motor 1,; the port l end 'of a hollow drillstev'el.,4 The striking bar 4 isi provided with grooves 9 to cooperate in a' wellknow'n manner with the ratchet mechanism 6 and these grooves are made Vto extend somewhat further back than*y usual and with a considerable clearance with respect to the lugs whichl engage them in 1 order't-hat a portion ofthe motive fluid supplied to. thev front endv of the cylinder 2l may-be transmitted through these grooves 9 and so to the hollow'` steel. Themotor 1 Yis mounted in axwellknown manner upon a cradle type feed mechanismgenerally designated "10. fFluid ,pressureis"supplied to combined controlling-'means for said mecha-V -'valve 18 open as may be desired,

the inotor 1 under l:the control of a throttle valveV l1 which is conical inform and is"l provided-with afre'cessl or kchamber 12 there in fwithwhich thefluid supplyfline 13 comffy municates.- Theports by means of which to the rock drilling motor are designated by Y numerals 12TL and 1212:Y A suitable operating handle 14 serves'to 'permitthe'vshifting of 'the valve 11l to control thefsupply of fluid ing the valve-member 11y in which a plunger. 17 1s longitudinally reciprocable, the plunger 6o the liow. is transmitted from therecess12 7 0 j .alongitudinally extending vbore 16 `travers-y 17 carryingat its inner end a valvehe'ad 18 which ismovable intothev chamberl2 and:V

this valvehe-ad Aisadapted tov cooperate with a' valve "seatglQ which is'arrangedat the` mmh' @fa Pesage 20 sur'wuadngfafre duced portion 21 ofthe stem 1"?"andlead4V ing tov a lateral` port 2 2- in thel side walljof the valve member 11. The vport 22 islcone `bore ofthe steel. A lspring 25 Ysurrounding the rear end of the stem 17 :cooperates lwith ahead 2 6 on the latterfto maintain the.

nectible withial passageV 23. which' leads, as

valve 18 normally closedvand ap'ivote'd leverY in juxtaposition theretof-may be i operated bythe hand4 grasping handle `14 to force The mode of .operation of my' improved mechanism lwillbe readilyapparent. lhen the handle 14 isturnedzto a'po'sitionto sup-y 22 will bey broughtin communication with the passage'23, but the valve 1 8V will vprevent theffflow' of-cleansing 'fluid through the tube 24.V Duringtlie o ieravtionlof .themotoig however, a vquantityl o fluid will'pass from the. front end offtlie cylinderthroughf the grooves 9 to vthe chuck land so tothe .holefftol be drilled. Vliena supplemental 'stronger the ico

blast of airisdesiredmfor dischargingany A accumulation ofstone-dusln- :and chips,v 'or for any Vother Ypurpose., the leverV 27 is opa will flowfroin fthe chamber 12 Y through the erated to force open Vthe'vailve flSand fluid 1 port 2O to the chamber surrounding the reduced portion 2l and port 22 and passage 28 to the tube 24, and so to the steel'. `Vlhen this supplemental blast isV no lon-ger needed, the hand lever- 27 may be released. It will thus be obvious .that I have provided a very simple and compact device for permitting the discharge of a supplemental blast of cleansing fluid Vto a steel when desired, and it :will be further noted that this same controlv.mechanism could be used in a drill- W'herein there was no supply through the.

grooves 9,r l.to `occasionally blow out a hole which would not .require constant air pressurelatall times, Y t c Y `Vhile'Ihave 4in this application specilic'al-ly described one formA which my -invention may assume in practice, it will he un-V derstood that thisy vformofthe same i-s shown for purposes of illustration and that the invention may be modified and embodied in various other formswithout departinglfrom its spirit -or'the scope `of the appended claims. A

-Wh'atfIclaim as ynew and desire to secure Letters Patent is: Y

1. In a rock drilling mechanism, a drill- Y ing vmotor adapted to actuate a-hollow drill steel,zcleansing fluid supply means for the drill steelmain controlling means for said motor and said cleansing `means including an operating memberv adapted to be grasped by theoperator, and auxiliary means for cont-rolling*saidcleansing fluid supply means includingmeans .loc-ated 1n juxtaposition to said operating member .thereby enabling the operator to control `said motor and cleans'- in-g means .by but a single hand without removing said hand from said operating member and with `equal yfacility in alloperating positions of.- the latter.

2. AIn a rock drilling. mechanism', a drilling v,motor'adapted to actuate a hollowfdrill steel, .cleansing fluid'supply `means for the' drillsteeLa marin controlling valve for said i motor i`and said ycleans-ing means including an operating.member1 adapted to be grasped by the operator, and an auxiliary valve locatedin said main controlling valve for controlling said cleansing fluid 4supply. means including means for enabling the operator' to control said motor and cleansing means by butfa;` single hand without removing saidV hand from said operating` member.

3. Ina rock .drilling mechanism, a fluidactuated drilling motor adapted to actuate avzhollow drill steel, cleansing fluid supply means for thedrillsteel, a :main throttle valve having. lan V'operating handle adapted to be .grasped Vby the operator, said valve including means for controlling the fluid flowto bothsaidmotor vand cleansing means,-

and auxiliary .cont-.rolling` Vmeansor enabling the operator tocontrol'the fluid flow to said i' cleansing fluid supply means V comprising auxiliary controlling means for enabling'Y the operator to control the fluid flowto said cleansing fluid supply means' having an operating handle overlying Asaid main valve Voperating handle and adapted to be included within the grasp `of a single hand 4wit'lfiout removing said 'hand fromA said main valve operating handle.

5., In a rock drilling mechanism, a fluid actuated drilling motor adapted to actu'ate a hollow drill steel, cleansing`r fluid supply means 'for the hollow .drillV steel, almain valve having au'operating handle adapted to be grasped by .the operator, said valve including means for controlling the fluid I flow to both k said motor and cleansing. means, Vand an auxiliary valve `embodied Within saidmain. valveand constituting means yfor t enabling the operator tocontrol the vfluid flow to said cleansing fluid supply` means, andan auxiliary control handle therefor positioned to be grasped by'but asingle hand without removing saidh'an'd from 4said main valve operating handle. .v

46. In a rock drilling mechanism,a fluid actuated drilling motor adapted to vactuate a. hollow drill4 steel, cleansing fluid supply means for the fhollowdrill ste-el, a main valve having anV operating V.handle adapted to begrasped by the operator, said 'valve including meansV for controlling the fluid dow tov both said motor and cleansing means, andan auxiliary valvearranged within said main valve and having an operating handle overlying said main valve 'operating handle for enabling the operator .to control vthe fluid flow to saidV cleansing fluidrsupply means, said handles being within the grasp cfa single hand withoutremoving said hand from saidmain valve operating handle.

7. In a rock drilling mechanism, a iiuid Vactuated drilling Vmotor comprising a cylinder and a percussive piston reciprocable therein, means operative to supply cleansing fluid from said cylinder to al hollow drill steel during 'the running of? saidginotor, means Vfor supplying an auxiliary supply of cleansing fluid. to thefdrill steel comprising Y Va. fluid suppflyrtube terminating atoneyend.

within the drill steel,a main valvehaving means forcontrolling the/fluid flow Yto 'said motor and to both of said cleansing means and having'a manually operable grasping handle, and auxiliary' means including a valve for separately controlling the Vfluid flow to said auxiliary' cleansing means, said auxiliary Vmeans having an operating member arranged in juxtaposition to said main throttle valve handle so as to enable theoperator to operate both valves by but a single hand without removing said hand from said main valve handle and with equal facility in all operating positions of the latter.

8. A controlling valve mechanism Vfor a rock drilling motor and drill steel cleansing means comprising a casino having fluid passages formed therein leading respectively to said motor and said steel cleansing means, a main controlling valve arranged within said casing and having means for controllingsaid passages, said Vvalve having an operating Y Vhandle,an auxiliary valve arranged coaxially within said mainvalve and movable axially lrelative thereto for controlling' the passages leading to said cleansing means and having an operating handle pivoted `on said main valve operating handle, said auxiliary valve being adapted to be opened when said handles are pressed together and automatically closed when said handles are released. Y

r9. A controlling valve mechanism for a rock drilling motor and drill steel cleansing means comprising a casing having fluid passages formed therein leading respectively/.to

said motor and said steel cleansing means, a

Y main coiitrollingvalve arranged within said casing including'means forV controlling the Vfluid flow in saidpassages, said valve having a fluid pressure chamber formed therein and an operating handle, `an auxiliary valve arranged coaxially Within said main valve and disposed in said fluid'pressure chamber for controlling the passage leading to said cleansing means, means for moving said auxiliary valve relatively to said main valve to open position, and means *for automatically closing s aid auxiliary valve. y,

10.' A controlling valve mechanism for a rock drilling motor and drill steel cleansing means comprising a casing having fluid passages formed therein leading respectively to said motor and said steel cleansing means, a vported valve bushing arranged within said casing, a vmain controlling valve arrangedl within said bushing and including meansfor controlling the iiuid flow in saidA passages,

saidvvalve having an operating handle, van auxiliary valve arranged coaxially within said main valve and including means for controlling the fluid flow in tliepassages leading to said cleansing means, 'said auxiliary valve having an operating handle and means for opening said auxiliary valve wli'ensaid handles are pressed together. v Y l1.v A controlling valveY mechanism for a l rock drilling motor anddrill steel cleansing means comprising a casinghaving passage means formed therein leading to; said motor Voverlying said main valve operating handle, 'i

aiidsteel cleansing means, a ported valve i bushing larranged in said casing, a main valve arranged in said bushing and including means for controlling the fluid flow to ysaid motor and cleansing means, and an ,aux-V 12. In a rock drilling mechanism, a Afluid actuated motor adapted to actuate a hollow drill steel, said ino-tor Yincluding meansfor supplying cleansing fluid to the drill steel f during running thereof, supplemental cleansing means for the drill steel, a main valve having ,a manually graspable operating handle including means lfor controlling the fluid flow tosaid motorand'both V,of said cleansing means, and an auxiliary `:valve including VVmeansfor controllingthe fluid flow to said supplemental cleansing means, said auxiliary valve having an operating member arranged in juxtaposition to said main valve handle` so Vas to enable theoperator to operate both valves by but a single hand without 'removing said hand from said main valve handle and with equal facility in al1 operating positions of the` latter..

y13. In a rock'drilling mechanism, a fluid i actuated motoradapted to actuatea hollowV drill steel, cleansing fluid supply kmeans for the drillsteel, a .main valve having-means for controlling the fluid flowto said motor,

said valve. having a handle adapted to be grasped by the operator, .and a separate valveY for controlling thefluid {low-to saidI drill steelcleansing means,'said valve being n movable independently of said main valve.

and having an operating handle arrangedv in juxtaposition to said Ymain valve handle so as to enable the Voperator to operate both valves by but a singley hand without removing said hand fromsaid main valve handle and with equal facilityin all operating vpositions of the latter.V

In testimony whereof I affix my Signat-ure.

ELMER G. Gaiarin.- 

